If you previously activated Windows 11 Pro on your PC, it should activate automatically once you sign in with your Microsoft Account (MSA) Upgrade from Windows 10:

Windows 11 Pro Insider Preview is a version of the operating system designed for users who want to test the newest features before they are released to the public. Because these builds are pre-release software, activation works differently than it does for standard consumer versions. How Activation Works for Insider Previews

Using your Windows 11 Pro Insider Preview activation key is a simple process. Here's how to do it:

Windows 11 Pro Insider Preview is a beta version of the upcoming Windows 11 operating system, designed for businesses and professionals. As an Insider Preview, it's a pre-release version that allows users to test new features and provide feedback to Microsoft. In this paper, we'll discuss the activation process for Windows 11 Pro Insider Preview.

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